US3505233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chloropentafluoroethane-pentafluoroethane azeotropic compositions
Assignee: Union Carbide Corp
•
Filing: 1968-11-12
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Granted: 1970-04-07
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Expires: 1988-11-12
Abstract
No abstract record available.
Inventors
- 👤 Jared W Clark
- 👤 Charles E Rectenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:26
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C19/10; C07C19/12; C09; C09K; C09K5/00; C09K5/02; C09K5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3377287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |